Elasticsearch gets statistics of the size of the document specified in the Id document

Question

Using Elasticsearch 1.4.0

Is there a way to find out information about the different sizes of a particular document with its identifier?

So, just to see how ES splits every single document?

Answer 1

Elasticsearch has a field _sizethat you can request for a document. To use it, you may need to enable it when displayed for your document type by adding "_size": {"enabled": true, "store": true}. There is not much documentation on its specifics, but it seems to correspond to the total field length _sourcefor this document. However, when calculating _sizeall the documents in the index, it will not correspond to the size of the primary storage for this index. This makes sense since the lucene base indexes store a tokenized representation of the document, not necessarily it _source.

Request example:

curl localhost:9200/myIndex/sometype/28c53efe-2eaf-11e5-80c3-000d1fc9a922?fields=_size

Result:

{
    "_index": "myIndex",
    "_type": "sometype",
    "_id": "28c53efe-2eaf-11e5-80c3-000d1fc9a922",
    "_version": 1,
    "found": true,
    "fields": {
        "_size": 905
    }
}